Much and great info in the posts above, and Kuhl is totally correct on impulse shopping patterns.
Ladies,
At the very least, insert into your signature something like thusly:
PM me first if new! Must have two references. If newbie, expect heavy screening. If old friend, please text. 
Listing the basic screening requirements ahead of everything else helps both your security needs and your time constraints. And, in your signature you can honestly say whatever else screening info is required before you will respond.
Much as I appreciate P411.com, eccie.net, ourhome2.net and, fwiw, backpage, eros, TER, etc., etc. most of them are only "part-time" conduits into a lady's boudoir. Using a pm/em that automatically alerts her phone (lets face it, most ladies are not 100 percent of the time ON LINE, but are on their phones way more) or a txt directly to her phone, is a quicker method to impulse shop.
Getting pre-screened is also a short-cut to assist in impulse shopping, but, truthfully, if you get pre-screened and then wait weeks and weeks to make an appointment, you are done shot in the foot and done making a new "friend."
